drm/dp: Describe target_rr_divider in struct drm_dp_as_sdp

Describe newly added parameter target_rr_divider in struct
drm_dp_as_sdp.

-v2:
Remove extra line from commit message.(Lucas)

-v3:
Rebase.

Fixes: a20c6d9 ("drm/dp: Add refresh rate divider to struct representing AS SDP")
Cc: Mitul Golani <[email protected]>
Cc: Arun R Murthy <[email protected]>
Cc: Suraj Kandpal <[email protected]>
Cc: Ankit Nautiyal <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Signed-off-by: Mitul Golani <[email protected]>
Reviewed-by: Ankit Nautiyal <[email protected]>
Acked-by: Maarten Lankhorst <[email protected]>
Signed-off-by: Maarten Lankhorst <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: gmitul

include/drm/display/drm_dp_helper.h

@@ -112,6 +112,7 @@ struct drm_dp_vsc_sdp {
  * @target_rr: Target Refresh
  * @duration_incr_ms: Successive frame duration increase
  * @duration_decr_ms: Successive frame duration decrease
+ * @target_rr_divider: Target refresh rate divider
  * @mode: Adaptive Sync Operation Mode
  */
 struct drm_dp_as_sdp {